Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas apresentações têm os estilos de dança rumba/tango?
 ###Tabelas: CREATE TABLE german_championship_finals_under_the_gauliga_system (german_championship_finals_under_the_gauliga_system_id AUTO_INCREMENT PRIMARY KEY, Year INT, Champion VARCHAR, Runner-Up VARCHAR, Result VARCHAR, Date VARCHAR, Venue VARCHAR, Attendance VARCHAR) CREATE TABLE participating_countries (participating_countries_id AUTO_INCREMENT PRIMARY KEY, Draw INT, Competing dancers VARCHAR, Dance styles VARCHAR, Rank INT, Points INT) CREATE TABLE current_team (current_team_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Current singles ranking VARCHAR, Current doubles ranking VARCHAR, First year played INT, Ties played INT, Total W–L VARCHAR, Singles W–L VARCHAR, Doubles W–L VARCHAR) CREATE TABLE pdc_premier_event_finals:_5_1_title_4_runner-ups (pdc_premier_event_finals:_5_1_title_4_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Opponent in the final VARCHAR, Score (l) = score in legs, (s) = score in sets. VARCHAR) CREATE TABLE by (by_id AUTO_INCREMENT PRIMARY KEY, Parish VARCHAR, Obama% VARCHAR, Obama# INT, McCain% VARCHAR, McCain# INT)  
SELECT COUNT Draw FROM participating_countries WHERE Dance styles = rumba/tango